# 397

This number is a prime.

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The prime that splits into a prime pair (3, 97) with sum one
hundred and *minimal*product (3*97=291). Note that the sum-product concatenation 100291 is prime, and that 397 is a left-truncatable prime, just like its counterpart prime 5347 that splits into two complementary primes (53, 47) also summing up to a hundred, but with

*maximum*product (53*47=2491). The reversal of whose sum-product concatenation however being also prime (1942001). [Beedassy]

Submitted: 2009-08-05 07:07:48; Last Modified: 2009-08-29 19:25:13.

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